Faction Battles

Just a question, I know there used to be 'Fight Nights' where there were 1 vs 1 fights but has anyone ever held something larger catered to faction fights? I know you guys can fight anywhere but something more controlled like 4 vs 4 faction battles with an agreed upon rule set? I'm not a PVP'er so I could be completely missing the boat here but just wanted to ask, sounds like something fun to watch to me.